.w {
    width: 80%;
    max-width: 1300px;
    margin:  0 auto;
}
.warpBox {
    min-height: 100vh;
    background-repeat: repeat-y;
    background-size: 100%;
    background-image: url(../images/img/about_bg.png);
    padding-bottom: 9.2857rem;
}
.content_1 {
    padding-top: 2.5rem;
    font-size: 18px;
    line-height: 40px;
    color: #212121;
}
.content_1 .txt {
    color: #4c4c4b;
}
.content_2>div {
    width: 100%;
}
img {
    width: 100%;
    display: block;
}